US11469651B2 - Device for manufacturing laminated iron core and method for manufacturing laminated iron core - Google Patents
Device for manufacturing laminated iron core and method for manufacturing laminated iron core Download PDFInfo
- Publication number
- US11469651B2 US11469651B2 US17/009,193 US202017009193A US11469651B2 US 11469651 B2 US11469651 B2 US 11469651B2 US 202017009193 A US202017009193 A US 202017009193A US 11469651 B2 US11469651 B2 US 11469651B2
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- US
- United States
- Prior art keywords
- adhesive
- metal sheet
- predetermined region
- die
- iron core
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 223
- 230000001070 adhesive effect Effects 0.000 claims abstract description 223
- 239000002184 metal Substances 0.000 claims abstract description 110
- 229910052751 metal Inorganic materials 0.000 claims abstract description 110
- 238000004080 punching Methods 0.000 claims abstract description 34
- 229910052742 iron Inorganic materials 0.000 claims 5
- 230000007246 mechanism Effects 0.000 description 29
- 239000007788 liquid Substances 0.000 description 20
- 238000003825 pressing Methods 0.000 description 15
- 238000003475 lamination Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000002505 iron Chemical group 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1056—Perforating lamina
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1062—Prior to assembly
- Y10T156/107—Punching and bonding pressure application by punch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
- Y10T156/1085—One web only
Definitions
- the present disclosure relates to a device for manufacturing a laminated iron core and a method for manufacturing a laminated iron core.
- JP2009-124828A discloses a method for manufacturing a laminated iron core in which a strip-shaped metal sheet is fed intermittently, an adhesive is applied from a supply head to one surface of the metal sheet, the metal sheet is punched into a predetermined shape with a punch to form one punched member to which the adhesive is attached, and the one punched member is laminated while being adhered to another punched member already punched with the adhesive.
- applying the adhesive to the one surface of the metal sheet includes applying the adhesive in a spot shape to a plurality of positions in a predetermined region serving as the punched member substantially at the same time. Therefore, the supply head is provided with a plurality of nozzles respectively corresponding to the plurality of positions so as to cover the entire predetermined region serving as the punched member.
- the present disclosure describes a device for manufacturing a laminated iron core and a method for manufacturing a laminated iron core with which the manufacturing cost of a laminated iron core can be reduced and the laminated iron core can be manufactured with high accuracy.
- a device for manufacturing a laminated iron core includes: a first supply unit configured to supply a first adhesive to a first part of a predetermined region, the predetermined region corresponding to a punched member of a strip-shaped metal sheet intermittently fed in one predetermined direction; a second supply unit arranged at a downstream side in a conveyance direction of the metal sheet with respect to the first supply unit, and configured to supply a second adhesive to a second part different from the first part of the predetermined region; and a punching unit configured to punch the predetermined region of the metal sheet to which the first supply unit and the second supply unit supply the first adhesive and the second adhesive, so as to form the punched member having the first adhesive and the second adhesive applied on the first part and the second part.
- a method for manufacturing a laminated iron core includes: supplying a first adhesive to a first part of a predetermined region, the predetermined region corresponding to a punched member of a strip-shaped metal sheet intermittently fed in one predetermined direction; supplying a second adhesive to a second part different from the first part of the predetermined region after supplying the first adhesive to the first part; and punching the predetermined region of the metal sheet after supplying the second adhesive to the second part, so as to form the punched member having the first adhesive and the second adhesive applied on the first part and the second part.
- the same effects as the device according to Example 1 as mentioned below can be obtained.
- the manufacturing cost of a laminated iron core can be reduced and the laminated iron core can be manufactured with high accuracy.
- FIG. 1 is a perspective view showing an example of a stator laminated iron core.
- FIG. 2 is a schematic view showing an example of a device for manufacturing a laminated iron core.
- FIG. 3 is a schematic sectional view showing an example of a press processing device.
- FIG. 4 is a top view showing examples of processing units (a punching unit and an adhesive unit) included in the press processing device.
- FIG. 5 is a diagram showing an example of a layout for punching a stator laminated iron core.
- FIG. 6 is a diagram showing another example of a layout for punching a stator laminated iron core.
- stator laminated iron core 1 laminated iron core
- the stator laminated iron core 1 is a part of a stator.
- the stator is configured by attaching winding wires to the stator laminated iron core 1 .
- the stator is combined with a rotor to form an electric motor (motor).
- the stator laminated iron core 1 has a cylindrical shape.
- a through hole 1 a penetrating the stator laminated iron core 1 is provided in the central portion of the stator laminated iron core 1 so as to extend along a center axis Ax.
- the through hole 1 a extends in a height direction (upper-lower direction) of the stator laminated iron core 1 .
- a rotor can be arranged in the through hole 1 a.
- the stator laminated iron core 1 includes a yoke portion 2 and a plurality of tooth portions 3 .
- the yoke portion 2 has an annular shape and extends so as to surround the center axis Ax.
- the plurality of tooth portions 3 extend from an inner edge of the yoke portion 2 toward the center axis Ax side along a radial direction of the yoke portion 2 .
- the plurality of tooth portions 3 protrude from the inner edge of the yoke portion 2 toward the center axis Ax side.
- the plurality of tooth portions 3 may be arranged at substantially equal intervals in a circumferential direction of the yoke portion 2 .
- a slot 4 which is a space for arranging the winding wire (not shown), is defined between the adjacent tooth portions 3 .
- the stator laminated iron core 1 is a laminated body in which a plurality of punched members W are laminated.
- the punched members W are plate-shaped body formed by punching a metal sheet MS (for example, electromagnetic steel plate) described below into predetermined shapes, so as to form a shape corresponding to the stator laminated iron core 1 .
- a through hole W 1 a is provided in the central portion of the punched members W.
- the punched member W has a yoke portion W 2 corresponding to the yoke portion 2 and a plurality of tooth portions W 3 corresponding to the tooth portions 3 .
- a slot W 4 corresponding to the slot 4 is defined between the adjacent tooth portions W 3 .
- the stator laminated iron core 1 may be configured by so-called rotating lamination.
- rotating lamination refers to laminating a plurality of punched members W while relatively shifting angles of the punched members W.
- the rotating lamination is performed mainly for the purpose of offsetting the plate thickness deviation of the punched members W and increasing the flatness, parallelism, and perpendicularity of the stator laminated iron core 1 .
- the angles of the rotating lamination may be set to any size.
- the punched members W that are adjacent to each other in the height direction (extending direction of the center axis Ax) are adhered to each other with an adhesive AD.
- the adhesive AD may include, for example, a plurality of spot-shaped adhesives AD 1 arranged on a surface of the yoke portion W 2 .
- the plurality of adhesives AD 1 may be arranged at substantially equal intervals along the circumferential direction of the yoke portion W 2 .
- the adhesive AD may include, for example, a plurality of spot-shaped adhesives AD 2 arranged on a surface of respective tooth portions W 3 . In one tooth portion W 3 , two or more adhesives AD 2 may be arranged along a longitudinal direction of the one tooth portion W 3 (the radial direction of the punched member W).
- An area of the adhesives AD 1 may be set larger than an area of the adhesives AD 2 , may be set equal to the area of the adhesives AD 2 , or may be set smaller than the area of the adhesives AD 2 .
- the manufacturing device 100 is configured to manufacture the laminated body 10 from the strip-shaped metal sheet MS.
- the manufacturing device 100 includes an uncoiler 110 , a feeding device 120 , a press processing device 130 , and a controller Ctr (control unit).
- the uncoiler 110 is configured to rotatably hold a coil material 111 .
- the coil material 111 is a metal sheet MS wound in a coil shape (spiral shape).
- the feeding device 120 includes a pair of rollers 121 , 122 sandwiching the metal sheet MS from an upper side and a lower side. The pair of rollers 121 , 122 rotate and stop based on an instruction signal from the controller Ctr, and intermittently and sequentially feed the metal sheet MS to the press processing device 130 .
- the press processing device 130 is configured to operate based on an instruction signal from the controller Ctr.
- the press processing device 130 may be configured to sequentially punch the metal sheet MS fed by the feeding device 120 with a plurality of punches, so as to form a plurality of punched members W, for example.
- the press processing device 130 may be configured to apply an adhesive to the metal sheet MS in the process of punching.
- the press processing device 130 may be configured to sequentially laminate the plurality of punched members W obtained by punching, so as to form the laminated body 10 . The details of the press processing device 130 will be described later.
- the controller Ctr is configured to generate an instruction signal for operating the feeding device 120 and the press processing device 130 based on a program recorded in a recording medium (not shown) or an operation input from an operator, for example.
- the controller Ctr is configured to send the instruction signal to the feeding device 120 and the press processing device 130 , separately.
- the press processing device 130 includes a lower die 140 , an upper die 150 , and a pressing machine 160 .
- the lower die 140 includes a base 141 , a die holder 142 (platform), die members D 1 to D 3 , supply units U 1 and U 2 , a plurality of guide posts 143 , and a conveyance mechanism 144 .
- the base 141 is fixed on a floor surface, for example, and functions as a base of the entire press processing device 130 .
- the die holder 142 is supported on the base 141 .
- the die holder 142 is formed with a plurality of discharge holes C 1 to C 3 .
- the plurality of discharge holes C 1 to C 3 may extend inside the die holder 142 in the upper-lower direction (see arrow Z in FIG. 3 ).
- the material punched out from the metal sheet MS (for example, the punched member W, waste material or the like) is discharged to the plurality of discharge holes C 1 to C 3 .
- the die members D 1 to D 3 and the supply units U 1 and U 2 are attached to an upper portion of the die holder 142 .
- the die member D 1 , the die member D 2 , the supply unit U 1 (first supply unit), the supply unit U 2 (second supply unit), and the die member D 3 (punching unit) are arranged in this order from the upstream side to the downstream side in a conveyance direction of the metal sheet MS.
- the die member D 1 includes a die plate D 11 and a die D 12 .
- the die plate D 11 is configured to hold the die D 12 in a through hole provided in a central portion.
- the die hole D 12 configures a first punching unit for punching the metal sheet MS together with a punch P 1 described later.
- the die D 12 is formed with a plurality of die holes D 13 penetrating in the upper-lower direction.
- the plurality of die holes D 13 may have shapes respectively corresponding to the plurality of slots W 4 .
- the number of the plurality of die holes D 13 may be the same as the number of the plurality of slots W 4 formed in the laminated body 10 .
- the plurality of die holes D 13 may be arranged at substantially equal intervals on the circumference of a predetermined virtual circle so as to form a circular shape as a whole.
- the plurality of die holes D 13 communicate with the discharge hole C 1 .
- the first punching unit punches the metal sheet MS in a shape along the contours of the plurality of die holes D 13 .
- a metal piece punched out from the metal sheet MS is discharged to the outside of the press processing device 130 through the discharge hole C 1 .
- the die member D 2 includes a die plate D 21 and a die D 22 .
- the die plate D 21 is configured to hold the die D 22 in a through hole provided in a central portion.
- the die hole D 22 configures a second punching unit for punching the metal sheet MS together with a punch P 2 described later.
- the die D 22 is formed with a die hole D 23 penetrating in the upper-lower direction.
- the die hole D 23 may have a shape corresponding to the through hole W 1 a .
- the die holes D 23 communicate with the discharge hole C 2 .
- the second punching unit punches the metal sheet MS in a shape along the contour of the die hole D 23 .
- a metal piece punched out from the metal sheet MS is discharged to the outside of the press processing device 130 through the discharge hole C 2 .
- the supply units U 1 and U 2 are configured to supply the adhesive AD to the metal sheet MS separately.
- the supply unit U 1 includes a supply plate U 11 , a liquid source U 12 , a liquid feeding mechanism U 13 , and a drive mechanism U 14 .
- the supply plate U 11 is, for example, a plate-shaped body having a rectangular shape. As shown in FIGS. 3 and 4 , a flow path U 11 a in which the adhesive AD can flow and a plurality of discharge ports U 11 b are formed in the supply plate U 11 .
- the flow path U 11 a is branched and extends so as to reach each of the plurality of discharge ports U 11 b.
- the plurality of discharge ports U 11 b are arranged radially from the center of the supply plate U 11 when viewed from above.
- three discharge ports U 11 b arranged in the radial direction form one first discharge port unit, and a plurality of the first discharge port units are arranged at substantially equal intervals on the circumference of a predetermined virtual circle so as to form an arc shape (major arc shape) as a whole.
- the plurality of discharge ports U 11 b as a whole have a C-shape that is open toward the upstream side (die member D 2 side).
- one discharge port U 11 b among the three discharge ports U 11 b arranged in the radial direction which is located radially outward is located so as to correspond to the yoke portion W 2 of the punched member W to be formed in a predetermined region of the metal sheet MS.
- two discharge ports U 11 b of the three discharge ports U 11 b arranged in the radial direction which are located radially inward are located so as to correspond to the tooth portions W 3 of the punched member W to be formed in the predetermined region of the metal sheet MS.
- An opening area of the one discharge port U 11 b may be set larger than an opening area of the two discharge ports U 11 b.
- the liquid source U 12 is a container that stores the adhesive AD.
- the adhesive AD for example, an acrylic or epoxy adhesive may be used.
- the adhesive AD may be a one-liquid type adhesive or a two-liquid mixed type adhesive.
- the liquid source U 12 is connected to the flow path U 11 a by a pipe U 15 .
- the adhesive AD stored in the liquid source U 12 may be referred to as a first adhesive, and a type (which is, for example, ingredient, material or the like) of the first adhesive may be the same as or different from that of the adhesive AD (i.e., second adhesive) stored in a liquid source U 22 mentioned below.
- the liquid feeding mechanism U 13 is arranged in the middle of the pipe U 15 .
- the liquid feeding mechanism U 13 is configured to operate based on an instruction from the controller Ctr and feed the adhesive AD of the liquid source U 12 to the flow path U 11 a .
- the liquid feeding mechanism U 13 may be, for example, a pump.
- the drive mechanism U 14 is configured to move the supply plate U 11 up and down based on an instruction signal from the controller Ctr.
- the drive mechanism U 14 may be configured to move the supply plate U 11 between, for example, a raised position where an upper face (surface) of the supply plate U 11 substantially coincides with upper faces (surfaces) of the die plates D 11 , D 21 , and D 31 , and a lowered position where the upper face (surface) of the supply plate U 11 is located below the upper faces (surfaces) of the die plates D 11 , D 21 , and D 31 .
- the drive mechanism U 14 may be arranged outside the lower die 140 instead of inside the die holder 142 .
- the supply unit U 2 includes a supply plate U 21 , the liquid source U 22 , a liquid feeding mechanism U 23 , and a drive mechanism U 24 .
- the supply unit U 2 differs from the supply unit U 1 mainly in the arrangement of a plurality of discharge ports U 21 b formed in the supply plate U 21 .
- the adhesive AD stored in the liquid source U 22 may be referred to as the second adhesive, and a type (which is, for example, ingredient, material or the like) of the second adhesive may be the same as or different from that of the adhesive AD (i.e., first adhesive) stored in a liquid source U 12 mentioned above.
- the plurality of discharge ports U 21 b are arranged radially from the center of the supply plate U 21 when viewed from above.
- three discharge ports U 21 b arranged in the radial direction form one second discharge port unit, and a plurality of the second discharge port units are arranged at substantially equal intervals on the circumference of a predetermined virtual circle so as to form an arc shape (minor arc shape) as a whole.
- the plurality of discharge ports U 21 b as a whole have a C-shape that is open toward the downstream side (die member D 3 side).
- one discharge port U 21 b among the three discharge ports U 21 b arranged in the radial direction which is located radially outward is located so as to correspond to the yoke portion W 2 of the punched member W to be formed in the predetermined region of the metal sheet MS.
- two discharge ports U 21 b of the three discharge ports U 21 b arranged in the radial direction which are located radially inward are located so as to correspond to the tooth portions W 3 of the punched member W to be formed in the predetermined region of the metal sheet MS.
- An opening area of the one discharge port U 21 b may be set larger than an opening area of the two discharge ports U 21 b.
- the die member D 3 includes a die plate D 31 , a die D 32 , and a drive mechanism D 34 .
- the die plate D 31 is configured to hold the die D 32 in a through hole provided in a central portion.
- the die D 32 may be held with respect to the die plate D 31 so as to be rotatable about a center axis extending along a vertical direction.
- a rotation holder that holds the die D 32 may be interposed between the die plate D 31 and the die D 32 , and the rotation holder may be rotatably held with respect to the die plate D 31 .
- the die hole D 32 configures a third punching unit for punching the metal sheet MS together with a punch P 3 (punching unit) described later.
- the die D 32 is formed with a die hole D 33 penetrating in the upper-lower direction.
- the die hole D 33 may have a shape corresponding to an outer shape of the punched member W.
- the die hole D 33 may have, for example, a circular shape as a whole.
- the die holes D 33 communicate with the discharge hole C 3 .
- the third punching unit punches the metal sheet MS in a shape along the contour of the die hole D 33 .
- the punched member W punched out from the metal sheet MS is laminated on a punched member W punched out previously while being adhered to each other by the adhesive AD.
- the obtained stator laminated iron core 1 is placed on the conveyance mechanism 144 through the discharge hole C 3 .
- the drive mechanism D 34 is connected to the die D 32 or a rotation holder (not shown).
- the drive mechanism D 34 rotates the die D 32 around the center axis of the die D 32 based on the instruction signal from the controller Ctr. Therefore, after the punched member W punched out from the metal sheet MS is laminated on the punched member W punched out previously, the die D 32 is rotated by a predetermined angle, so that the succeeding punched member W is laminated on while being rotated with respect to the preceding punched member W.
- the drive mechanism D 34 may be implemented by, for example, a combination of a rotary motor, gears, a timing belt, or the like.
- the plurality of guide posts 143 linearly extend upward from the die holder 142 .
- the plurality of guide posts 143 together with guide bushes 151 a (to be described later), are configured to guide the upper die 150 in the upper-lower direction.
- the plurality of guide posts 143 may be attached to the upper die 150 so as to extend downward from the upper die 150 .
- the conveyance mechanism 144 is configured to operate based on an instruction from the controller Ctr and send the stator laminated iron core 1 dropped from the die D 32 to a subsequent device (for example, a welding device or the like).
- the conveyance mechanism 144 may be, for example, a belt conveyor.
- the upper die 150 includes a punch holder 151 , a stripper 152 , and a plurality of punches P 1 to P 3 .
- the punch holder 151 is arranged above the die holder 142 so as to face the die holder 142 .
- the punch holder 151 is configured to hold the plurality of punches P 1 to P 3 on a lower surface side thereof.
- the punch holder 151 is provided with a plurality of guide bushes 151 a .
- the plurality of guide bushes 151 a are located so as to correspond to the plurality of guide posts 143 , respectively.
- the guide bush 151 a has a cylindrical shape, and the guide post 143 can be inserted into an internal space of the guide bush 151 a .
- the guide bush 151 a may be provided on the lower die 140 .
- the punch holder 151 is provided with a plurality of through holes 151 b .
- a step-like step is formed on an inner peripheral surface of the through hole 151 b . Therefore, a diameter of an upper portion of the through hole 151 b is set smaller than a diameter of a lower portion of the through hole 151 b.
- the stripper 152 is configured to remove from the punches P 1 to P 3 the metal sheet MS that is punched into the punches P 1 to P 3 when the metal sheet MS is punched with the punches P 1 to P 3 .
- the stripper 152 is arranged between the die members D 1 to D 3 and the punch holder 151 .
- the stripper 152 is connected to the punch holder 151 via a connecting member 152 a .
- the connecting member 152 a includes an elongated main body portion and a head portion provided on an upper end of the main body portion.
- the main body portion of the connecting member 152 a is inserted into the lower portion of the through hole 151 b and can move up and down in the through hole 151 b .
- a lower end of the main body portion of the connecting member 152 a is fixed to the stripper 152 .
- a biasing member 152 b (for example, a compression coil spring) may be attached around the main body portion of the connecting member 152 a so as to exert a biasing force on the punch holder 151 and the stripper 152 in a direction of separating the punch holder 151 and the stripper 152 .
- a head portion of the connecting member 152 a is arranged on the upper portion of the through hole 151 b .
- An outer shape of the head portion of the connecting member 152 a is set to be larger than an outer shape of the main body portion of the connecting member 152 a when viewed from above. Therefore, the head portion of the connecting member 152 a can move up and down in the upper portion of the through hole 151 b , but the step of the through hole 151 b functions as a stopper and cannot move to the lower portion of the through hole 151 b . Therefore, the stripper 152 is suspended and held by the punch holder 151 so as to be movable up and down relative to the punch holder 151 .
- the stripper 152 is provided with through holes at positions corresponding to punches P 1 to P 3 , respectively. Each through hole extends in the upper-lower direction. Each of the through holes communicates with the corresponding die holes D 13 , D 23 , and D 33 when viewed from above. Lower portions of the punches P 1 to P 3 are inserted into the respective through holes. The lower portions of the punches P 1 to P 3 are slidable in the respective through holes.
- the punches P 1 to P 3 are arranged in this order from the upstream side to the downstream side of the press processing device 130 .
- a lower end portion of the punch P 1 has a shape corresponding to the die hole D 13 .
- the lower end portion may be, for example, a columnar body having a rectangular cross section.
- the number of the punches P 1 may be the same as that of the die holes D 13 .
- the plurality of punches P 1 may be arranged at substantially equal intervals on the circumference of a predetermined virtual circle so as to form a circular shape as a whole.
- a lower end portion of the punch P 2 has a shape corresponding to the die hole D 23 .
- the lower end portion may be, for example, a columnar body having a circular cross section.
- the number of the punches P 2 may be the same as that of the die holes D 23 .
- a lower end portion of the punch P 3 has a shape corresponding to the die hole D 33 .
- the lower end portion may be, for example, a columnar body having a circular cross section.
- the pressing machine 160 is located above the upper die 150 .
- a piston of the pressing machine 160 is connected to the punch holder 151 and operates based on an instruction signal from the controller Ctr. When the pressing machine 160 operates, the piston thereof expands and contracts, and the upper die 150 moves up and down as a whole.
- the pressing machine 160 When the metal sheet MS is intermittently fed to the press processing device 130 by the feeding device 120 and a predetermined part of the metal sheet MS reaches the die member D 1 , the pressing machine 160 operates to push the upper die 150 downward toward the lower die 140 . Even after the stripper 152 reaches the metal sheet MS and the metal sheet MS is sandwiched between the stripper 152 and the die member D 1 , the pressing machine 160 pushes the upper die 150 downward.
- the stripper 152 does not move, but the punch holder 151 and the punches P 1 to P 3 continue to move downward. Therefore, the tip end portions of the punches P 1 to P 3 move downward in the respective through holes of the stripper 152 and further reach the die holes D 13 , D 23 , and D 33 .
- the punch P 1 punches the metal sheet MS along the die hole D 13 .
- the slot W 4 corresponding to the slot 4 is formed in the metal sheet MS.
- the waste material punched out is discharged from the discharge hole C 1 .
- the pressing machine 160 operates to raise the upper die 150 .
- the upper die 150 is moved up and down by the pressing machine 160 , and the half punching or punching of the metal sheet MS by the punch P 2 is performed similarly to the above.
- the through hole W 1 a corresponding to the through hole 1 a is formed in the metal sheet MS.
- the waste material punched out is discharged from the discharge hole C 2 .
- the upper die 150 is moved up and down by the pressing machine 160 similarly to the above.
- the controller Ctr instructs the liquid feeding mechanism U 13 to push out the adhesive AD toward the plurality of discharge ports U 11 b , so that the adhesive AD discharged from the plurality of discharge ports U 11 b is supplied to the metal sheet MS.
- the adhesive AD is applied to a first region R 1 , which may be hereinafter referred to as a first part, of a predetermined region R serving as the punched member W of the metal sheet MS (see the light gray part in FIG. 5 ).
- the predetermined region R is a region surrounded by an imaginary line corresponding to an outer peripheral edge of the punched member W and an inner peripheral edge of the punched member W defined by the plurality of tooth portions W 3 and the plurality of slots W 4 .
- the first region R 1 is a part of the predetermined region R and is the part that corresponds to the plurality of discharge ports U 11 b . Therefore, in the example of FIG. 5 , the first region R 1 as a whole has a C-shape that is open toward the upstream side of the metal sheet MS (major arc shape).
- the upper die 150 is moved up and down by the pressing machine 160 similarly to the above.
- the controller Ctr may instruct the drive mechanism U 24 to position the supply plate U 21 in the raised position.
- the processing area A 2 of the metal sheet MS is sandwiched by the supply plate U 21 and the stripper 152 .
- the controller Ctr instructs the liquid feeding mechanism U 23 to push out the adhesive AD toward the plurality of discharge ports U 21 b , so that the adhesive AD discharged from the plurality of discharge ports U 21 b is supplied to the metal sheet MS.
- the adhesive AD is applied to a second region R 2 , which may be hereinafter referred to as a second part, of the predetermined region R (see the dark gray part in FIG. 5 ).
- the processing area A 2 is in a state where the adhesive AD is applied to the entire predetermined region R (see the processing area A 2 in FIG. 5 ).
- the second region R 2 is a part of the predetermined region R that is different from the first region R 1 , and is the part that corresponds to the plurality of discharge ports U 21 b . Therefore, in the example of FIG. 5 , the second region R 2 as a whole has a C-shape that is open toward the downstream side of the metal sheet MS (minor arc shape).
- the controller Ctr may instruct the drive mechanism U 24 to position the supply plate U 21 in the lowered position.
- the controller Ctr may instruct the drive mechanism U 24 to position the supply plate U 21 in the lowered position.
- the upper die 150 is moved up and down by the pressing machine 160 , and the punching (outer-shape blanking processing) of the metal sheet MS by the punch P 3 is performed similarly to the above.
- a punched member W having a lower surface thereof applied with the adhesive AD or a punched member W having no adhesive AD applied is formed.
- the latter punched member W may form the lowermost layer of the stator laminated iron core 1
- the former punched member W may form a layer other than the lowermost layer of the stator laminated iron core 1 .
- the punched member W after being punched is adhered to, by the adhesive AD, a punched member W punched out previously while being laminated thereon in the die hole D 33 .
- the controller Ctr may instruct the drive mechanism D 34 to rotate the die D 32 together with the punched member W in the die hole D 33 by a predetermined angle. After a predetermined number of punched members W are laminated in the die hole D 33 , the stator laminated iron core 1 is completed.
- the supply units U 1 and U 2 respectively supply the adhesive AD to different regions (the first region R 1 and the second region R 2 ) of the predetermined region R serving as the punched member W. Therefore, as compared with the case where the adhesive AD is supplied so as to cover the entire predetermined region R of the punched member W, the individual supply units U 1 and U 2 can be downsized and the flow paths U 11 a and U 21 a of the adhesive AD can be simplified. Therefore, the clogging of the adhesive AD is less likely to occur, and the frequency of maintenance work is reduced. Accordingly, a manufacturing cost of the stator laminated iron core 1 can be reduced.
- the controller Ctr individually controls the liquid feeding mechanisms U 13 and U 23 and the drive mechanisms U 14 and U 24 , so that the supply units U 1 and U 2 operate independently. Therefore, it is possible to form both the punched member W to which the adhesive AD is supplied and the punched member W to which the adhesive AD is not supplied at all.
- stator laminated iron core other than the cylindrical non-split stator laminated iron core 1
- the manufacturing device 100 described above may be used.
- the other stator laminated iron core may be configured with, for example, a split-type iron core block formed by combining a plurality of iron core pieces.
- the other stator laminated iron core may be configured with, for example, a laminated body obtained by laminating a plurality of bending-type punched members each of which is provided with a plurality of tooth portions on one yoke portion, and has an annular shape by being bent between the tooth portions.
- the manufacturing device 100 described above When manufacturing a laminated iron core other than the stator laminated iron core 1 (for example, a rotor laminated iron core), the manufacturing device 100 described above may be used.
- the controller Ctr may stop the operation of the liquid feeding mechanism U 13 , the controller Ctr may control the drive mechanism U 14 to move the supply plate U 11 to the lowered position, or the controller Ctr may execute both of these.
- the supply units U 1 and U 2 may be arranged so as to be adjacent to each other in the conveyance direction of the metal sheet MS. In this case, the supply unit U 2 supplies the adhesive AD to the metal sheet MS immediately after the supply unit U 1 supplies the adhesive AD to the metal sheet MS. Alternatively, another processing unit may be arranged between the supply units U 1 and U 2 in the conveyance direction of the metal sheet MS.
- the supply units U 1 and U 2 and each punching unit may be mounted on one die holder 142 as in the above example.
- the supply units U 1 and U 2 may be physically separated from each punching unit in the press processing device 130 .
- the supply units U 1 and U 2 may be configured as devices physically separate from the press processing device 130 .
- the supply units U 1 and U 2 may be configured to supply the adhesive AD to a lower face of the metal sheet MS, or may be configured to supply the adhesive AD to an upper face of the metal sheet MS.
- the adhesive AD is supplied to the supply unit MS in two times by the two supply units U 1 and U 2 , but the adhesive AD may be supplied to the metal sheet MS in three or more times by using three or more supply units.
- the manufacturing device 100 may be used in the case of performing the so-called “multi-row machining” in which the punched members W are separately formed in a plurality of rows arranged in a width direction of the metal sheet MS.
- the adhesive AD is applied to the first region R 1 which is the right half of the predetermined region R.
- the adhesive AD is applied to the second region R 2 which is the left half of the predetermined region R.
- the metal sheet MS is punched in the predetermined region R to form the punched member W.
- the adhesive AD is applied to the entire predetermined region R at a processing area B 1 in the lower row. It may be expressed in other words that the adhesive AD is applied to the predetermined region R to be arranged substantially as an annular shape, instead of an arc shape. Then, at a processing area B 2 in the lower row of FIG. 6 , the metal sheet MS is not processed (punching or application of the adhesive AD). Thereafter, at a processing area B 3 in the lower row of FIG. 6 , the metal sheet MS is punched in the predetermined region R to form the punched member W. In the upper row and the lower row of FIG. 6 , the adhesive AD may also be supplied to different parts of the predetermined region R in two or more times.
- An example of a device ( 100 ) for manufacturing a laminated iron core ( 1 ) may include a first supply unit (U 1 ) configured to supply a first adhesive (AD) to a first part (R 1 ) of a predetermined region (R), the predetermined region (R) corresponding to a punched member (W) of a strip-shaped metal sheet (MS) intermittently fed in one predetermined direction, and a second supply unit (U 2 ) arranged at a downstream side in a conveyance direction of the metal sheet (MS) with respect to the first supply unit (U 1 ), and configured to supply a second adhesive (AD) to a second part (R 2 ) different from the first part (R 1 ) of the predetermined region (R).
- a first supply unit (U 1 ) configured to supply a first adhesive (AD) to a first part (R 1 ) of a predetermined region (R), the predetermined region (R) corresponding to a punched member (W) of a strip-shaped metal sheet (MS) intermittent
- the example of the device ( 100 ) for manufacturing the laminated iron core ( 1 ) may further include a punching unit (D 3 , P 3 ) configured to punch the predetermined region (R) of the metal sheet (MS) to which the first supply unit (U 1 ) and the second supply unit (U 2 ) supply the first adhesive (AD) and the second adhesive (AD), so as to form the punched member (W) having the first adhesive (AD) and the second adhesive (AD) applied on the first part (R 1 ) and the second part (R 2 ).
- the first and second supply units respectively supply the adhesive to different regions (the first part and the second part) of the predetermined region serving as the punched member.
- the individual supply units can be downsized and the flow paths of the adhesive can be simplified. Therefore, the clogging of the adhesive is less likely to occur, and the frequency of maintenance work is reduced. Accordingly, a manufacturing cost of the laminated iron core can be reduced. Further, with the individual supply units being downsized and the flow paths of the adhesive being simplified, a path difference between the respective flow paths leading to a plurality of nozzles becomes small. Therefore, even if each of the first and second supply units includes a plurality of nozzles for discharging the adhesive, a variation in the discharge amounts of the adhesive from the plurality of nozzles is less likely to occur.
- the flatness, parallelism, and perpendicularity of the laminated iron core are improved, so that it is possible to manufacture the laminated iron core with high accuracy.
- the individual supply units being downsized, it becomes difficult for the supply units to interfere with other units of the manufacturing device. Therefore, it is possible to reduce the size of the manufacturing device as a whole and increase a degree of freedom in the layout of the first and second supply units.
- the device ( 100 ) according to Example 1 may further include a third supply unit configured to supply a third adhesive (AD) to at least one part of another predetermined region located side by side with the predetermined region in a width direction of the metal sheet (MS), the another predetermined region corresponding to another punched member of the metal sheet (MS).
- the device ( 100 ) according to Example 1 may include another punching unit configured to punch the another predetermined region of the metal sheet (MS) to which the third supply unit supplies the third adhesive (AD), so as to form the another punched member having the third adhesive (AD) applied on the at least one part.
- Example 1 the same effects as those in Example 1 can be obtained even in the case of performing the so-called “multi-row machining” in which the punched members (the punched member and the another punched member) are separately formed in a plurality of rows arranged in the width direction of the metal sheet.
- the third supply unit may be configured to supply the third adhesive (AD) entirely to the another predetermined region.
- the device ( 100 ) may further include a controller (Ctr) configured to independently control an operation in which the first supply unit (U 1 ) supplies the first adhesive (AD) to the metal sheet (MS) and an operation in which the second supply unit (U 2 ) supplies the second adhesive (AD) to the metal sheet (MS).
- the second supply unit is located on the downstream side of the first supply unit, so that the supply of the adhesive to the metal sheet by the second supply unit is performed in a different step from the supply of the adhesive to the metal sheet by the first supply unit.
- the adhesive is applied only to the second part of the predetermined region if the supply of the adhesive by the first and second supply units is stopped at the same time when the predetermined region of the metal sheet is located in the first supply unit, and then the supply of the adhesive by the first and second supply units operates at the same time when the predetermined region of the metal sheet is located in the second supply unit, for example.
- the first and second supply units operate independently, so that a punched member in which the supply of the adhesive by the first and second supply units is not performed (the adhesive is not applied at all) can be formed.
- the first supply unit (U 1 ) and the second supply unit (U 2 ) may be arranged side by side with each other in the conveyance direction of the metal sheet (MS).
- the first supply unit (U 1 ), the second supply unit (U 2 ) and the punching unit (D 3 , P 3 ) may be mounted on a single platform ( 142 ), or may be provided individually to each other.
- An example of a method for manufacturing a laminated iron core ( 1 ) may include supplying a first adhesive (AD) to a first part (R 1 ) of a predetermined region (R), the predetermined region (R) corresponding to a punched member (W) of a strip-shaped metal sheet (MS) intermittently fed in one predetermined direction, and supplying a second adhesive (AD) to a second part (R 2 ) different from the first part (R 1 ) of the predetermined region (R) after supplying the first adhesive (AD) to the first part (R 1 ).
- the example of the method for manufacturing the laminated iron core ( 1 ) may further include punching the predetermined region (R) of the metal sheet (MS) after supplying the second adhesive (AD) to the second part (R 2 ), so as to form the punched member (W) having the first adhesive (AD) and the second adhesive (AD) applied on the first part (R 1 ) and the second part (R 2 ).
- the same effects as the device according to Example 1 can be obtained.
- the method according to Example 7 may further include supplying a third adhesive (AD) to at least one part of another predetermined region located side by side with the predetermined region (R) in a width direction of the metal sheet (MS), the another predetermined region corresponding to another punched member of the metal sheet (MS).
- the method according to Example 6 may further include punching the another predetermined region of the metal sheet after supplying the third adhesive to the at least one part, so as to form the another punched member having the third adhesive applied on the at least one part. In this case, the same effects as the device according to Example 2 can be obtained.
- the supplying the third adhesive (AD) to the at least one part may include supplying the third adhesive (AD) entirely to the another predetermined region.
- the supplying of the second adhesive (AD) to the second part (R 2 ) may be performed immediately after the supplying of the first adhesive (AD) to the first part (R 1 ).
Abstract
Description
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JP2019-172781 | 2019-09-24 | ||
JP2019172781A JP7360868B2 (en) | 2019-09-24 | 2019-09-24 | Laminated core manufacturing equipment and laminated core manufacturing method |
JPJP2019-172781 | 2019-09-24 |
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US20210091644A1 US20210091644A1 (en) | 2021-03-25 |
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EP (1) | EP3797892A1 (en) |
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JP2009124828A (en) | 2007-11-13 | 2009-06-04 | Kuroda Precision Ind Ltd | Manufacturing apparatus of laminated core |
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JP2003033711A (en) | 2001-07-25 | 2003-02-04 | Koatekku:Kk | Device and method for painting adhesive |
JP4567304B2 (en) * | 2003-07-08 | 2010-10-20 | 本田技研工業株式会社 | Punching and forming method for continuously variable transmission belt element |
JP5554133B2 (en) | 2010-04-23 | 2014-07-23 | 芝浦メカトロニクス株式会社 | Semiconductor device manufacturing apparatus and semiconductor device manufacturing method |
JP6457969B2 (en) * | 2016-05-19 | 2019-01-23 | 株式会社三井ハイテック | Manufacturing method of laminated iron core |
JP6883997B2 (en) * | 2017-02-10 | 2021-06-09 | 株式会社三井ハイテック | Laminated iron core manufacturing equipment and laminated iron core manufacturing method |
JP6764463B2 (en) | 2018-12-21 | 2020-09-30 | 株式会社三井ハイテック | Manufacturing method of laminated iron core |
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2019
- 2019-09-24 JP JP2019172781A patent/JP7360868B2/en active Active
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2020
- 2020-09-01 EP EP20193830.5A patent/EP3797892A1/en active Pending
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JP2009124828A (en) | 2007-11-13 | 2009-06-04 | Kuroda Precision Ind Ltd | Manufacturing apparatus of laminated core |
JP2016171652A (en) | 2015-03-12 | 2016-09-23 | アイシン・エィ・ダブリュ株式会社 | Method of manufacturing motor and motor core |
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EP3797892A1 (en) | 2021-03-31 |
US20210091644A1 (en) | 2021-03-25 |
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